Timeline history of the most used smartphone operating systems from 1999 to 2019.
I've updated my previous most used mobile OS video with a much broader and recent numbers.
I've also went from 2007 to earlier years when first smart mobile devices started to emerge.
Numbers presented here showing market share by specific OS, measured by amount of units shipped worldwide. For the late 90s - PDA devices are included as a first pioneers in the field.